Practice Quiz #1 | Coursera

- 2 x + 2

-2*x+2

Correct

\frac{- 2 x^{2} + 1}{\left(2 x^{2} + 1\right)^{2}}

(1-2*x^2)/(1+2*x^2)^2

Correct

\sqrt{2} x^{-1 + \sqrt{2}} - \frac{1}{3 \left(- x + 2\right)^{\frac{2}{3}}}

-1/3*(2-x)^(-2/3)+sqrt(2)*x^(sqrt(2)-1)

Correct

\left(- 2 x + \frac{2}{x} \log{\left (x \right )}\right) e^{- x^{2} + \log^{2}{\left (x \right )}}

E^(-x^2+(ln(x))^2)*(-2*x+2*(ln(x))/x)

Correct

- \frac{- x^{2} e^{- x} + 2 x e^{- x}}{\sqrt{- x^{4} e^{- 2 x} + 1}}

-1/sqrt(1-x^4*E^(-2*x))*(2*x*E^-x-x^2*E^-x)

Correct

2 \sin{\left (4 x \right )}

2*sin(4*x)

Correct